The lime-furred fox raced down a winding corridor lined with lockers and classroom door. She was in a hurry to relieve an all too familiar pressure. Though something about the scene seemed surreal, she paid no mind to it. This need was a pressing matter to her, and had to be tended to immediately. 
Truth be told, the fox has graduated high school not too long ago. Though the familiar and disliked scene provided her subconscious with the ideal dreamscape for less than desirable visions. And this was definitely one.  
Almost there" she told herself, knowing that around the next bend, she would find relief. Though as she rounded the corner, she was frozen in place. There before her, she saw her lemon furred sister, bent over the water fountain, drinking the clear liquid, her gray and brown school uniform contrasting unappealing with her fur. 
Each gulp of liquid by her sister seemed to add to her tortured state, causing her to squirm. Her mind trained in on the flowing liquid, which seemed to grow louder. She could almost feel her bladder expanding by the second. Then her sister wiped her maw with the back of her hand, turned right towards her, and smiled. 
"Forget something, Limeade?" Then she walked in to the bathroom, the sound of flowing water not ceasing. The fox looked down at herself to find, she wasn't dressed in the school uniform her sister was wearing. Nor any other outfit. 
She then covered herself, despite being completely alone in the hall. Blushing a deep red as her paws went between her legs both to hide her embarrassment and hold her urine inside, she made her way in to the bathroom.  
The doorway seemed heavier than it should have been, and took all her strength to push. But once she opened it, she found herself overlooking a completely foreign scene. Rather than a school bathroom in disrepair, she stared upon what she guessed was Niagara falls, millions of gallons plummeting in to the great river below. Absent mindedly, she watched the sight, stepping closer as her body begged her to follow the example of the waterfall. She stepped closer, and closer, then... 
She fell, right over the edge of a cliff, one that had not been there moments before. And it felt like she was falling forever. 
--- 
The naked lime green fox rolled out of the bed, hitting the ground with a thud. Jolted awake, she assessed her surroundings, a bit startled by her dream state. She saw the very early morning sun shine its light in her window, heard the shower running right through the wall, and... 
Felt the aching pressure in her bladder begging to be let out. 
She cursed under her breath, knowing Lemonade took forever in the bathroom, not caring about the fact that the two were supposed to share it. Hours of grooming, showering, and hogging the mirror left Limeade, the younger sister by only moments, with constant struggles to hold it.  
She was left with no choice but to try and distract her mind from her desperately increasing need. Dwelling on her bladder was futile, having no idea how long her sister had been in there, or how long until she was done.  
The faint sound of running water coming through the door was certainly no help, a constant reminder of her desperate state. So she resolved to grab her headphones, hoping some other sounds would distract her from her bladder, which noticeably bulged, thanks to her thin frame.  
It worked, for a while. She was less concerned with what she was listening to, and more about having a distraction. Tuned in to a comedy show, she lay back, listening to some thirty something guy try to be edgy. Mildly amusing jokes about restaurant and travel kept thoughts of bathroom stuff away.  
Then, a particularly funny joke caught her by surprise. She couldn’t help but burst out laughing. So much so, her bladder muscles gave way for an instant. A few drops of golden liquid slept through, lightly forming a wet spot on her panties, and her feminine folds becoming moist. Her hands immediately went between her legs.  
She couldn’t make it now. If she moved, it would mean a trail of pee all the way to the bathroom door. She glanced around quickly, trying to think fast. Her bladder was weak, and she could feel the flood gates weakening. A few more drops leaked out, and she gasped.  
Despite the predicament she was in, she found herself, almost enjoying herself. Why was this exciting her so much? The intense pressure, the helplessness, as she held back and fought her urges. It excited her deeply, and she couldn’t help it.  
Though she only had a moment to dwell on it, as another couple drops escaped, a little stronger. She was about to burst, then she turned to see her stuffed sheep. Without another thought, she grabbed it, forcing it against her folds. Grinding it against her mound, she felt as her body finally decided to release her bladder's contents.  
Release felt like nothing else. Her whole form relaxed, leaning against the backboard, while a torrent of golden liquid soaked in to the wool of the poor sheep, staining it yellow, soaking deep in to the absorbent stuffing within. A soft moan escaped her lips while she went, her hands feeling the warn and heavy toy soaking up her bulging bladder's contents.  
A whole minute of this left Limeade relieved, full of pleasure, and drenched. As helpful as the sheep was, a good amount ran down her legs in to the sheets. She was busy holding the warmth against her girlhood, when she heard a click, and her older sister leaving the bathroom. Limeade was about to jump up to rush to the bathroom and clean off, when she thought to herself. “This feels amazing… Why rush to the shower?” Keeping the golden lamb between her legs, she lay back a while, unable to think of anything else besides reliving that desperation and relief again.  